Title Massive missing data reconstruction in ocean buoys with evolutionary product unit neural networks
Authors DURAN ROSAL, ANTONIO MANUEL, Hervas-Martinez, C., Tallon-Ballesteros, A. J., MARTÍNEZ ESTUDILLO, ALFONSO CARLOS, Salcedo-Sanz, S., MARTÍNEZ ESTUDILLO, ALFONSO CARLOS, DURAN ROSAL, ANTONIO MANUEL
External publication No
Means Ocean Eng.
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 1.89400
SJR Impact 1.25800
Area International
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962438996&doi=10.1016%2fj.oceaneng.2016.03.053&partnerID=40&md5=c1a2ecbc896c0725fe9f349f5a811264
Publication date 01/05/2016
ISI 000376052000026
Scopus Id 2-s2.0-84962438996
DOI 10.1016/j.oceaneng.2016.03.053
Abstract In this paper we tackle the problem of massive missing data reconstruction in ocean buoys, with an evolutionary product unit neural network (EPUNN). When considering a large number of buoys to reconstruct missing data, it is sometimes difficult to find a common period of completeness (without missing data on it) in the data to form a proper training and test set. In this paper we solve this issue by using partial reconstruction, which are then used as inputs of the EPUNN, with linear models. Missing data reconstruction in several phases or steps is then proposed. In this work we also show the potential of EPUNN to obtain simple, interpretable models in spite of the non-linear characteristic of the neural network, much simpler than the commonly used sigmoid-based neural systems. In the experimental section of the paper we show the performance of the proposed approach in a real case of massive missing data reconstruction in 6 wave-rider buoys at the Gulf of Alaska. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords Significant wave height; Missing values reconstruction; Product unit neural networks; Evolutionary algorithm
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